Jennifer Aniston donned a black little dress and a gorgeous new hairdo on Friday in Boston.

Jennifer Aniston & Justin Theroux's Red Carpet Photos

The 45-year-old actress attended an event for Living Proof Style Lab, for which she's a co-owner and a spokesperson. Aniston showed off a sleek shoulder-length bob as she posed for photos with the brands chief executive officer Jill Beraud.

"It's a wonderful product line that I believe in and which makes a difference to so many people - it lives up to its name. And it's fun to be involved creatively from concept to execution, sharing my ideas," Aniston recently shared to WWD about Living Proof.

"After spending 25-plus years in makeup and hair, you learn what works and what doesn't work, what damages your hair - what you have to mix five products together to achieve. And [in my Living Proof] role I have all these men in white lab coats where I can throw out ideas."

Back in November, Aniston made headlines when she debuted a significantly shorter hairstyle. Her longtime hairstylist Chris McMillan cut her long locks in late October and she revealed that it was hard for her to adjust.

"It wasn't for a role. My hair went through a phase-I did this thing called a Brazilian and my hair did not react really well to it," the former Friends star told Elle U.K. on Nov. 1. "The minute I cut my hair I want it back. Always. It's a guarantee. I'm trying really hard to love this one."

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